Use invalidation sets for :hover, :active, and :focus.

Source/core/core.gypi

 {
     'variables': {
         # Files for which bindings (.cpp and .h files) will be generated
         'core_idl_files': [
             'animation/Animation.idl',
             'animation/AnimationPlayer.idl',
             'animation/TimedItem.idl',
             'animation/Timeline.idl',
             'animation/Timing.idl',
             'clipboard/DataTransfer.idl',
@@ skipping 3336 matching lines @@
             'animation/TimingInputTest.cpp',
             'css/AffectedByFocusTest.cpp',
             'css/CSSCalculationValueTest.cpp',
             'css/CSSFontFaceTest.cpp',
             'css/CSSParserValuesTest.cpp',
             'css/CSSSelectorTest.cpp',
             'css/CSSTestHelper.cpp',
             'css/CSSTestHelper.h',
             'css/CSSValueTestHelper.h',
             'css/DragUpdateTest.cpp',
-            'css/HoverUpdateTest.cpp',
             'css/MediaValuesTest.cpp',
             'css/MediaQueryEvaluatorTest.cpp',
             'css/MediaQuerySetTest.cpp',
             'css/RuleSetTest.cpp',
             'css/invalidation/DescendantInvalidationSetTest.cpp',
             'css/parser/BisonCSSParserTest.cpp',
             'css/parser/MediaQueryTokenizerTest.cpp',
             'css/parser/SizesAttributeParserTest.cpp',
             'css/parser/MediaConditionTest.cpp',
             'css/resolver/FontBuilderTest.cpp',
@@ skipping 21 matching lines @@
             'html/track/vtt/VTTScannerTest.cpp',
             'loader/MixedContentCheckerTest.cpp',
             'rendering/RenderOverflowTest.cpp',
             'rendering/shapes/BoxShapeTest.cpp',
             'testing/UnitTestHelpers.cpp',
             'testing/UnitTestHelpers.h',
             'xml/parser/SharedBufferReaderTest.cpp',
         ],
     }
 }